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Bracken

Pteridium aquilinum · Dennstaedtiaceae

The gardener's calendar

The right move for September

Ideal time to plant bracken: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous, disappears in winter
Adult size
0.5 to 1.5 m tall
Growth
Fast to very fast
Hardiness
Very hardy, down to -20°C
Origin
Cosmopolitan, present on all continents
Soil type
Acidic to neutral, well-drained

Care

Watering

Bracken fern enjoys moist but not waterlogged soil. Water regularly during the growing season (spring-summer), especially during prolonged dry spells. In winter, after the foliage dies back, you can significantly reduce watering.

Light

This fern develops well in partial shade or indirect light. It tolerates dense shade, although growth will be more moderate. Avoid intense direct sun which can cause the foliage to dry out prematurely.

Soil

Acidic soil, rich in organic matter and well-drained is ideal for Pteridium aquilinum. Enrich your soil with compost or peat before planting. This fern adapts to poor soils, but growth will be better in amended soil.

Pruning and cleaning

No formal pruning is necessary. In late autumn or early winter, you can cut back the dried fronds to ground level to encourage vigorous regrowth in spring. Remove old plant debris around the plant.

Fertilizer

Moderate application of balanced fertilizer or well-decomposed compost in spring is sufficient. Ferns appreciate regular additions of organic matter. Avoid excess fertilizer, which could promote unbalanced growth.

Diseases and pests

Pteridium aquilinum is generally very hardy. Watch for leaf spots or rust in very humid and poorly aerated conditions. Excessive stagnant moisture can promote rhizome rot. Good air circulation limits these issues.

Did you know?

Pteridium aquilinum is one of the most widespread ferns in the world, naturally present on all continents. Historically, it has been used since antiquity as bedding for livestock, fuel, and even as a source of starch. Because of its ability to rapidly colonize disturbed lands, it is considered invasive in some ecosystems.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.